Figure 4. Contribution of GHF43 proteins to plant polymer hydrolysis in the rumen.

(A) The relative abundance and distribution of glycosyl hydrolase families in the metagenome from the bovine rumen microbiome. The data include the pyrosequencing data of 4 metagenomic samples, including fibre-adherent and pooled liquid [10]. (B) New pathways of pentose and hexose digestion by the R_09-02-like enzymes in bovine rumen. The scheme indicates that R_09-02 may contribute to the digestion of arabinoxylans (a common activity associated with GHF43 enzymes: grey arrows) and gluco- and galactooligosaccharides (black arrows) derived from amylose/starch and galactans.